本文内容来自于matplotlib官网：matplotlib官网markers资料
This module contains functions to handle markers. Used by both the marker functionality of plot and scatter.
All possible markers are defined here:
该模块包含处理标记的功能。 用于plot和scatter的这两个模块的标记功能。
这里定义了所有可能的标记：
| marker | description |
|---|---|
"." |
point |
"," |
pixel |
"o" |
circle |
"v" |
triangle_down |
"^" |
triangle_up |
"<" |
triangle_left |
">" |
triangle_right |
"1" |
tri_down |
"2" |
tri_up |
"3" |
tri_left |
"4" |
tri_right |
"8" |
octagon |
"s" |
square |
"p" |
pentagon |
"P" |
plus (filled) |
"*" |
star |
"h" |
hexagon1 |
"H" |
hexagon2 |
"+" |
plus |
"x" |
x |
"X" |
x (filled) |
"D" |
diamond |
"d" |
thin_diamond |
"|" |
vline |
"_" |
hline |
| TICKLEFT | tickleft |
| TICKRIGHT | tickright |
| TICKUP | tickup |
| TICKDOWN | tickdown |
| CARETLEFT | caretleft (centered at tip) |
| CARETRIGHT | caretright (centered at tip) |
| CARETUP | caretup (centered at tip) |
| CARETDOWN | caretdown (centered at tip) |
| CARETLEFTBASE | caretleft (centered at base) |
| CARETRIGHTBASE | caretright (centered at base) |
| CARETUPBASE | caretup (centered at base) |
"None", " " or "" |
nothing |
'$...$' |
render the string using mathtext. |
verts |
a list of (x, y) pairs used for Path vertices. The center of the marker is located at (0,0) and the size is normalized. |
| path | a Path instance. |
(numsides, style, angle) |
The marker can also be a tuple (
|
For backward compatibility, the form (verts, 0) is also accepted, but it is equivalent to just verts for giving a raw set of vertices that define the shape.
None is the default which means 'nothing', however this table is referred to from other docs for the valid inputs from marker inputs and in those cases None still means 'default'.
为了向后兼容，表单（verts，0）也被接受，但它只相当于verts，用于给出一组定义形状的原始顶点。
无默认值表示“无”，但是此表从其他文档中引用来自标记输入的有效输入，在这些情况下，“无”仍表示“默认”。
作者：biyoulin
出处：http://www.cnblogs.com/biyoulin/
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